1. Environmental protection, no pollution to the environment

2. After being fixed with a fixing agent, it should be able to comprehensively improve various dyeing fastness, including soap washing, dry rubbing, wet rubbing, and sweat stain fastness

3. After being fixed with a fixing agent, the color change should be reduced, which does not affect the color brightness of the dye and is convenient for production control

4. Color fixing agents should be safe, non-toxic, and do not produce toxic or harmful substances during storage and use

The fixation mechanism, development history and trends, and classification of color fixing agents